EP2560859B1 - Système mobile - Google Patents

Système mobile Download PDF

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Publication number
EP2560859B1
EP2560859B1 EP11714039.2A EP11714039A EP2560859B1 EP 2560859 B1 EP2560859 B1 EP 2560859B1 EP 11714039 A EP11714039 A EP 11714039A EP 2560859 B1 EP2560859 B1 EP 2560859B1
Authority
EP
European Patent Office
Prior art keywords
wheels
displaceable
plane
wheel
wheel axles
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP11714039.2A
Other languages
German (de)
English (en)
Other versions
EP2560859A1 (fr
Inventor
Tomas Smetana
Raphael Fischer
Bernd Gombert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schaeffler Technologies AG and Co KG
Original Assignee
Schaeffler Technologies AG and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Schaeffler Technologies AG and Co KG filed Critical Schaeffler Technologies AG and Co KG
Publication of EP2560859A1 publication Critical patent/EP2560859A1/fr
Application granted granted Critical
Publication of EP2560859B1 publication Critical patent/EP2560859B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D7/00—Steering linkage; Stub axles or their mountings
    • B62D7/02—Steering linkage; Stub axles or their mountings for pivoted bogies
    • B62D7/04—Steering linkage; Stub axles or their mountings for pivoted bogies with more than one wheel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D11/00—Steering non-deflectable wheels; Steering endless tracks or the like
    • B62D11/02—Steering non-deflectable wheels; Steering endless tracks or the like by differentially driving ground-engaging elements on opposite vehicle sides
    • B62D11/06—Steering non-deflectable wheels; Steering endless tracks or the like by differentially driving ground-engaging elements on opposite vehicle sides by means of a single main power source
    • B62D11/10—Steering non-deflectable wheels; Steering endless tracks or the like by differentially driving ground-engaging elements on opposite vehicle sides by means of a single main power source using gearings with differential power outputs on opposite sides, e.g. twin-differential or epicyclic gears
    • B62D11/14—Steering non-deflectable wheels; Steering endless tracks or the like by differentially driving ground-engaging elements on opposite vehicle sides by means of a single main power source using gearings with differential power outputs on opposite sides, e.g. twin-differential or epicyclic gears differential power outputs being effected by additional power supply to one side, e.g. power originating from secondary power source
    • B62D11/16—Steering non-deflectable wheels; Steering endless tracks or the like by differentially driving ground-engaging elements on opposite vehicle sides by means of a single main power source using gearings with differential power outputs on opposite sides, e.g. twin-differential or epicyclic gears differential power outputs being effected by additional power supply to one side, e.g. power originating from secondary power source the additional power supply being supplied mechanically
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D11/00—Steering non-deflectable wheels; Steering endless tracks or the like
    • B62D11/20—Endless-track steering having pivoted bogie carrying track
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D7/00—Steering linkage; Stub axles or their mountings
    • B62D7/06—Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins
    • B62D7/14—Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins the pivotal axes being situated in more than one plane transverse to the longitudinal centre line of the vehicle, e.g. all-wheel steering
    • B62D7/142—Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins the pivotal axes being situated in more than one plane transverse to the longitudinal centre line of the vehicle, e.g. all-wheel steering specially adapted for particular vehicles, e.g. tractors, carts, earth-moving vehicles, trucks

Definitions

  • the invention relates to a movable system.
  • the invention relates to a movable system having at least one set of wheels arranged in pairs, for movement within a plane, in pairs of individual wheel axles parallel to the plane.
  • the set is designed to be rotatable in total by at least one axis that is essentially perpendicular to the wheel axes and to the plane.
  • the German patent application DE 10 2004 014 773 A1 discloses a drive device for an industrial truck.
  • the industrial truck has a turntable rotatable about a vertical axis and two parallel and mirror-symmetrical to the vertical axis mounted on the turntable drive wheels.
  • a device for generating a differential action is provided, which is arranged between the two drive wheels.
  • each drive wheel is coupled to its own engine designed as a wheel hub motor.
  • the international patent application WO 20091082496 A1 discloses a device for transporting buildings.
  • the building to be transported rests on a support structure, which in turn comprises four movable systems each comprising at least two wheels.
  • Each of the wheels of a movable system is associated with a motor to drive the corresponding wheel.
  • the operator By means of a control system it is possible for the operator to control the transport system.
  • the individual motors are operated on the movable system accordingly, so that the entire transport system can be moved in the intended direction or to the intended position.
  • the Japanese patent application JP 2004-090903 also outlines a movable System consisting of at least two wheels arranged on one axle. Likewise, the movable system is rotatable about an axis perpendicular to the wheel axis. Each wheel of the movable system is assigned a single drive. By suitable control of the individual drives of the wheels, the movable system can be controlled or controlled accordingly.
  • the Japanese patent application JP 55-039846 also discloses a transport system provided with a plurality of movable systems.
  • the movable systems are controllable so that the movement of the transport system is ensured around corners of a building or a warehouse.
  • Each movable system of the transport system consists of two individual wheels, each with its own drive. By suitable control of the drives of the wheels of each movable system thus the transport system can be controlled to be moved around the corners.
  • the U.S. Patent 3,827,517 also discloses a movable system comprising two wheels arranged in a holder. Each wheel is assigned a motor. The engine is hydrostatically operated.
  • the Japanese patent application JP 2008-213570 also outlines a movable system comprising two wheels arranged on a common wheel axle. Further, an axis is provided which is arranged perpendicular to the wheel axis and to the plane of movement of the movable system. The movable system is rotatable about this axis. Each wheel of the movable system is assigned a drive system. The drive systems are designed identically for each wheel.
  • the invention has for its object to provide a movable system that is inexpensive and is used in many chassis in a variety of applications.
  • the movable system is configured for movement in a plane.
  • the movable system has at least one set of at least two paired wheels mounted on at least one wheel axis parallel to a plane.
  • the set and thus also the movable system are designed to be rotatable in total by at least one axis which is substantially perpendicular to the wheel axes and to the plane.
  • a differential torque distribution and an actuator are provided for the at least two arranged on the wheel axle wheels of a set a single electric drive motor.
  • the actuator may be formed in a preferred embodiment as an electric servomotor.
  • the drive unit for the movable system is thus formed from the electric drive motor, the differential and the actuator (or electric servomotor).
  • the electric actuator acts on the differential in such a way that individual wheel-generated by the single electric drive motor moments within the wheel axle to the wheels are individually distributed.
  • the wheel axle is designed to be split, so that the at least two paired wheels on the wheel axle or the wheel axles can be driven individually in pairs.
  • the set on the wheels parallel to the plane arranged wheels is pivotable about a further axis which is arranged parallel to the plane and perpendicular to the wheel axle or the wheel axles.
  • the wheel-specific distribution of the torques on the wheels arranged on the wheel axles is the same.
  • an active actuator or active electric servomotor the wheel-individual distribution of the torques of the arranged on the wheel axles wheels of the movable system is different. This difference thus makes possible a rotation of the set as a whole about the axis substantially perpendicular to the wheel axes and to the plane.
  • the rotation of the set about the axis substantially perpendicular to the wheel axis and the plane it is possible to steer a vehicle accurately, accurately and narrowly.
  • the differential with torque distribution which is arranged between the drive motor and the actuator or electric servomotor, consists of two identical planetary gears.
  • the individual distribution of the moments on the wheels of a set takes place steplessly over the active moment of the actuator.
  • the actuator may be formed according to an embodiment as an electric servomotor.
  • the power of the electric servomotor is smaller than the power of the drive motor.
  • the power of the electric servomotor can be at least ten times smaller than that of the electric drive motor.
  • the electric drive motor and the electric servomotor are designed as hollow shaft motors.
  • the movable system is associated with a sensor system, with the states of the movable system can be detected.
  • the states to be detected by the sensor system are the forces acting in the movable system and or Moments.
  • the sensor system may further comprise a measuring system with which paths and / or postions and / or accelerations are detected.
  • a communication electronics can be provided, by means of which the analog signals and / or digital data detected by the sensor system are transmitted to a control system.
  • Power electronics can each be integrated in the drive motor and / or in the actuator.
  • a cooling system may be provided which works with a variety of known from the prior art coolants.
  • the data or signal transmission from the sensor system or the sensor systems to the control system can take place by means of a wireless transmission.
  • the control system assumes a dynamic driving and model-based control of the at least one movable system.
  • Each of the movable systems can be provided with distance sensors that detect any obstacles that restrict a free mobility of the movable systems.
  • a plurality of the elements of the movable system may also be made of lightweight materials, e.g. Plastic, fiber-reinforced plastic, aluminum, magnesium, etc., be made.
  • the arranged on a movable system wheels are not limited to two wheels.
  • the wheels can be arranged in various designs on the axes of a movable system.
  • the wheels can identify a different diameter.
  • the at least paired wheels are designed with a fall and / or a slip angle.
  • the movable system is pivotable about a further axis, wherein the axis is aligned substantially parallel to the plane and perpendicular to the wheel axles.
  • the pivot axis can also be mounted eccentrically to an imaginary connecting line of the wheels arranged on the axles.
  • the actuator 12 used to initiate the variable torque distribution is referred to as an electric servomotor.
  • the electric servomotor thus represents a possible embodiment, as the actuator 12 may be configured.
  • the limitations of the description to the term "electric servomotor” is not to be construed as limiting the invention. It is obvious to a person skilled in the art that the actuator 12 can be designed to be technically different.
  • FIG. 1 shows a schematic view of the system 100 for variable torque distribution within at least one axle 4 of a vehicle (not shown).
  • the design of the system 100 is sufficiently known from the prior art. It is a drive motor 10 is provided which acts on a differential 14 with a variable torque distribution.
  • the differential 14 consists of two identical planetary gears 31 and 32. On the planetary gear 31 and 32 acts a servo motor 12.
  • the drive motor 10 is formed as an electric motor.
  • the servo motor 12 is designed as an electric motor.
  • the power of the drive motor 10 is at least ten times greater than the power of the servomotor 12th
  • FIG. 2 shows a schematic view of the movable system according to the invention 1.
  • the movable system 1 comprises a first wheel 6 1 and a second wheel 6 2 , which are both arranged on wheel axles 4 1 , 4 2 . It goes without saying that more than one wheel 6 1 and 6 2 can be provided on each of the wheel axles 4 1 , 4 2 . In the following figures is always only one wheel 6 1 or 6 2 provided on each of the axles 4 1 , 4 2 , which can not be construed as limiting the invention.
  • the wheel axles 4 1 , 4 2 may be arranged in different orientations to each other. That in the FIGS. 2 to 6 shown movable system 1 thus consists of a set 2 of two wheels 6 1 and 6 2 , which are each mounted on a rim 7 and thus formed rotatable about the wheel axle 4.
  • the wheel axle 4 is aligned substantially parallel to a plane 20 in which the movable system can move when actuated.
  • a drive unit 9 is arranged on the wheel axle 4 of the movable system 1.
  • the drive unit 9 consists of an electric drive motor 10, a differential 14 and a servo motor 12.
  • the movement of the movable system 1 within the plane 20 is effected with the single electric drive motor 10.
  • the control and steering of the movable system is achieved by the electric servomotor 12, which thus allows a wheel-individual distribution of the drive torque of the single electric drive motor 10 to the wheels 6 1 and 6 2 within the wheel axle 4.
  • the movable system 1 is designed such that it is likewise designed to be rotatable about an axis 8 perpendicular to the wheel axis and perpendicular to the plane 20.
  • the movable system 1 may further be provided with a sensor system 30, with the states of the movable system 1 can be detected. Via a communication electronics 33, the analog signals and / or digital data detected by the sensor system 30 are transmitted to a control system 34.
  • the control system 34 assumes a dynamic driving and model-based control of the at least one movable system.
  • a power electronics 36 may be integrated in the drive motor 10 and / or in the actuator 12.
  • Each set 2 of substantially parallel to the plane 20 wheel axles 4 1 , 4 2 of the at least paired wheels 6 1 , 6 2 is equipped with a GPS system 40, so that a position of each set in space can be determined. From the communication electronics 33 to the control system 34, a wireless transmission can take place.
  • FIG. 3 shows the situation in which act on the wheels 6 1 and 6 2 of the movable system 1, the same moments. This is achieved in that the electric actuator 12 is inactive. Thus, the two wheels 6 1 and 6 2 of the electrical system are driven via the single electric drive motor 10. Identical drive torques D 1 and D 2 are conducted to the wheels 6 1 and 6 2 of the movable system 1. The movable system 1 thus moves in straight ahead within the plane 20.
  • FIG. 4 shows the situation that the electric actuator 12 is active.
  • the activity of the electric servomotor 12 thus a different distribution of the drive torque D 1 and D 2 is achieved on the wheels 6 1 and 6 2 of the movable system.
  • This distribution of the driving moments D 1 and D 2 shown here causes the movable system 1 to rotate about the axis 8, thus causing a steering action of the movable system 1.
  • a number of movable systems 1 can be provided in one vehicle.
  • a suitable control of the individual electric servo motors 12 of the drive units 9 of the individual movable systems a targeted control of the vehicle (not shown) is thus possible.
  • FIG. 5 shows the connection of the movable system of the first wheel 6 1 and the second wheel 6 2 in a vehicle (not shown here).
  • the connection element 23 is pivotable about a further axis 22, which is aligned perpendicular to the wheel axis 4 and parallel to the plane 20.
  • FIG. 6 shows the situation that the movable system 1 runs over bumps 24 formed within the plane 20.
  • the movable system 1 pivots about the axis 22, which by the connection element 23 and substantially also passes through the wheel axle 4.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)

Claims (12)

  1. Système mobile (1), qui présente, pour le déplacement dans un plan (20), au moins un jeu (2) d'au moins deux roues (61, 62) disposées par paires, lequel est monté sur au moins un essieu de roue (41, 42) essentiellement parallèle au plan (20), le jeu (2) étant réalisé de manière à pouvoir tourner généralement autour d'au moins un axe (8) essentiellement perpendiculaire à l'au moins un essieu de roue (41, 42) et au plan (20), caractérisé en ce que sur les essieux de roue (41, 42) pour les au moins deux roues (61, 62) d'un jeu (2) repose un moteur d'entraînement électrique unique (10), un différentiel (14) avec une répartition de couple variable et un actionneur (12), l'actionneur (12) agissant sur le différentiel (14) de telle sorte que les couples produits par le moteur d'entraînement électrique unique (10) à l'intérieur des essieux de roue (41, 42) puissent être répartis individuellement aux roues sur les au moins deux roues (61, 62).
  2. Système mobile (1) selon la revendication 1, dans lequel le jeu (2) des roues (61, 62) disposées sur les essieux de roue (41, 42) essentiellement parallèles au plan (20) peut pivoter autour d'un axe supplémentaire (22) qui est essentiellement parallèle au plan (20) et essentiellement perpendiculaire aux essieux de roue (41, 42).
  3. Système mobile (1) selon les revendications 1 et 2, dans lequel lorsque l'actionneur (12) n'est pas activé, la répartition individuelle aux roues des couples sur les roues (61, 62) sur les essieux de roue (41, 42) est identique.
  4. Système mobile (1) selon les revendications 1 et 2, dans lequel, lorsque l'actionneur (12) est activé, la répartition individuelle aux roues des couples sur les roues (61, 62) sur les essieux de roue (41, 42) est différente, de sorte qu'une rotation du jeu (2) généralement autour de l'axe (8) essentiellement perpendiculaire aux essieux de roue (41, 42) et au plan (20) puisse être produite.
  5. Système mobile (1) selon les revendications 1 à 4, dans lequel le différentiel (14) avec une répartition de couple variable se compose d'essentiellement deux engrenages planétaires identiques (31, 32), la répartition individuelle des couples sur les roues (61, 62) d'un jeu (2) pouvant être ajustée en continu par le biais du couple actif de l'actionneur (12).
  6. Système mobile (1) selon l'une quelconque des revendications 1 à 5, dans lequel l'actionneur (12) est réalisé sous forme de moteur de réglage électrique dont la puissance est inférieure à la puissance du moteur d'entraînement (10).
  7. Système mobile (1) selon la revendication 6, dans lequel le moteur d'entraînement électrique (10) et le moteur de réglage électrique (12) sont réalisés sous forme de moteurs à arbre creux.
  8. Système mobile (1) selon l'une quelconque des revendications 1 à 7, dans lequel un système de capteur (30) est prévu, avec lequel des états du système mobile (1) peuvent être détectés.
  9. Système mobile (1) selon l'une quelconque des revendications 1 à 8, dans lequel une électronique de communication (33) est prévue, au moyen de laquelle des signaux analogiques et/ou des données numériques peuvent être transmis à un système de contrôle (34).
  10. Système mobile (1) selon la revendication 9, dans lequel le système de contrôle (34) reprend une régulation dynamique de conduite et basée sur un modèle de l'au moins un système mobile (1).
  11. Système mobile (1) selon la revendication 1, dans lequel une électronique de puissance (36) est intégrée dans le moteur d'entraînement (10) et/ou dans l'actionneur (12).
  12. Système mobile selon l'une quelconque des revendications 1 à 11, dans lequel chaque jeu (2) de roues (61, 62) disposées au moins par paires sur des essieux de roue (41, 42) essentiellement parallèles au plan (20) est muni d'un système GPS (40) de telle sorte qu'une position de chaque jeu dans l'espace puisse être déterminée.
EP11714039.2A 2010-04-21 2011-04-13 Système mobile Active EP2560859B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201010015713 DE102010015713A1 (de) 2010-04-21 2010-04-21 Bewegbares System
PCT/EP2011/055758 WO2011131525A1 (fr) 2010-04-21 2011-04-13 Système mobile

Publications (2)

Publication Number Publication Date
EP2560859A1 EP2560859A1 (fr) 2013-02-27
EP2560859B1 true EP2560859B1 (fr) 2014-06-11

Family

ID=44484823

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11714039.2A Active EP2560859B1 (fr) 2010-04-21 2011-04-13 Système mobile

Country Status (5)

Country Link
US (1) US8967303B2 (fr)
EP (1) EP2560859B1 (fr)
CN (1) CN102858620B (fr)
DE (1) DE102010015713A1 (fr)
WO (1) WO2011131525A1 (fr)

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US10017170B1 (en) * 2017-01-05 2018-07-10 GM Global Technology Operations LLC System and method for propulsion system control
AT519463B1 (de) * 2017-01-28 2018-07-15 Fahrwerk

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Also Published As

Publication number Publication date
US20130037331A1 (en) 2013-02-14
US8967303B2 (en) 2015-03-03
WO2011131525A1 (fr) 2011-10-27
CN102858620A (zh) 2013-01-02
CN102858620B (zh) 2015-03-18
EP2560859A1 (fr) 2013-02-27
DE102010015713A1 (de) 2011-10-27

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